What is the time difference between Bangkok and Sydney?

Sydney is 3 hours ahead of Bangkok. That figure is current — it changes by an hour when either city starts or ends daylight saving, and the exact dates are listed above.

When is the best time to call Sydney from Bangkok?

Between 09:00–15:00 in Bangkok, which is 12:00–18:00 in Sydney. That is the only stretch where both cities are inside a 09:00–18:00 day.

Does Bangkok observe daylight saving time?

No. Bangkok stays on UTC+7 all year, so its clocks never move.

Does Sydney observe daylight saving time?

Yes. Sydney runs on UTC+10 in winter and UTC+11 in summer. The next change is on 2026-10-04, when clocks go forward by 60 minutes.

If it is midday in Bangkok, what time is it in Sydney?

It is 15:00 in Sydney, on the same calendar date. That holds for the current offsets; it shifts by an hour around the daylight saving dates listed above.

Which time zones do Bangkok and Sydney use?

Bangkok uses Asia/Bangkok, currently UTC+7, and Sydney uses Australia/Sydney, currently UTC+10 (AEST). Those identifiers are the ones to use in code — abbreviations are ambiguous and offsets change.

Convert Bangkok time to Sydney time

Right now Sydney runs 3 hours ahead of Bangkok. That gap is not fixed: it moves when either city changes its clocks.

Convert a time

From

Date

Time

Converted time

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The converter needs JavaScript to run. Everything below — offsets, daylight saving dates and the hour-by-hour table — is part of the page and works without it.

Hour by hour

Every hour of a day in Bangkok, and what the clock reads in Sydney at that same moment.

Bangkok	Sydney
00:00	03:00
01:00	04:00
02:00	05:00
03:00	06:00
04:00	07:00
05:00	08:00
06:00	09:00
07:00	10:00
08:00	11:00
09:00	12:00
10:00	13:00
11:00	14:00
12:00	15:00
13:00	16:00
14:00	17:00
15:00	18:00
16:00	19:00
17:00	20:00
18:00	21:00
19:00	22:00
20:00	23:00
21:00	00:00next day
22:00	01:00next day
23:00	02:00next day

Daylight saving time

Bangkok keeps one offset all year while Sydney moves twice. That is the whole reason this difference is seasonal.

Bangkok

Does not observe daylight saving time

Standard: UTC+7

Sydney

Observes daylight saving time

Standard: UTC+10
Daylight: UTC+11
Next change: 2026-10-04 +60m

When you can actually talk

You have 6 hours of shared working time: 09:00–15:00 in Bangkok, which is 12:00–18:00 in Sydney.

Bangkok 09:00–15:00Sydney 12:00–18:00

Reference

The zone identifiers and offsets behind everything above.

	Bangkok	Sydney
IANA zone	Asia/Bangkok	Australia/Sydney
Abbreviation	UTC+7	AEST
Standard offset	UTC+7	UTC+10
Daylight offset	—	UTC+11
Clock changes this year	0	2
Country	Thailand	Australia

Example, not the current time. Live times appear once the page loads.

Common questions

What is the time difference between Bangkok and Sydney?: Sydney is 3 hours ahead of Bangkok. That figure is current — it changes by an hour when either city starts or ends daylight saving, and the exact dates are listed above.
When is the best time to call Sydney from Bangkok?: Between 09:00–15:00 in Bangkok, which is 12:00–18:00 in Sydney. That is the only stretch where both cities are inside a 09:00–18:00 day.
Does Bangkok observe daylight saving time?: No. Bangkok stays on UTC+7 all year, so its clocks never move.
Does Sydney observe daylight saving time?: Yes. Sydney runs on UTC+10 in winter and UTC+11 in summer. The next change is on 2026-10-04, when clocks go forward by 60 minutes.
If it is midday in Bangkok, what time is it in Sydney?: It is 15:00 in Sydney, on the same calendar date. That holds for the current offsets; it shifts by an hour around the daylight saving dates listed above.
Which time zones do Bangkok and Sydney use?: Bangkok uses Asia/Bangkok, currently UTC+7, and Sydney uses Australia/Sydney, currently UTC+10 (AEST). Those identifiers are the ones to use in code — abbreviations are ambiguous and offsets change.